Anti-cataract agent
CA 2204582 A1 · Owner: Inoue, Jun · Inventors: Inoue, Jun
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a novel anti-cataract agent which contains a compound represented by the general formula; (see fig.I), (wherein A represents a pyrimidine ring R1 and R2 represent, independently a hydrogen atom or C1-6 alkyl or alkoxy group, which may be substituted) or its salt, as an effective, ingredient. The compound and their salts can be utilized for preventing or treating cataract of mammalian including human by oral or parenteral administration.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 6, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 6, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 6, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.